Purple Loosestrife Flower Seeds
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- About About
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Features
Life Cycle
Perennial
Planting Season
Spring–Early Summer
Growth Habit
Upright Clumping
Flavor Profile
Not Edible
Plant Characteristics
Tall Purple Spikes
Use
Borders, Wetlands
Growing Conditions
Moist, Full Sun
Harvest Advantages
Long Blooming
Plant Resistance
Pest Resistant
About – Purple Loosestrife
Lythrum salicaria
Seed Names
Purple Loosestrife
Seed Type
Open-Pollinated
Purple Loosestrife (Lythrum salicaria) is a striking wetland perennial producing dense spikes of vibrant purple flowers. Ideal for naturalized areas and rain gardens, it thrives in moist soil and adds bold color from mid to late summer. Note: In some regions, it is considered invasive—check local guidelines before planting.
Planting Information
Light Requirement
Full Sun
Planting Depth
Surface Sow
Sowing Method
Direct or Indoor
Plant Spacing
12–18 Inches
Days to Maturity
90–120 Days
Soil Preparation
Cold Stratify
Hardiness Zones
4–9
Water Needs
High Moisture
Planting Season
Spring
Coverage
Seed Count
Recommended Coverage
100
Up to 100 sq ft
500
Up to 500 sq ft
1000
Up to 1000 sq ft